Home / 13,281.52-19,889.42-7,717.98

Finding the Fourth Proportional to 13,281.52, 19,889.42 and 7,717.98

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Solution

The fourth proportional to 13,281.52, 19,889.42 and 7,717.98 is: 11,557.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,281.52 : 19,889.42 = 7,717.98 : x
  2. Step 2: Convert to fraction form
    13,281.52/19,889.42 = 7,717.98/x
  3. Step 3: Cross multiply
    13,281.52x = 19,889.42 × 7,717.98
  4. Step 4: Simplify right side
    13,281.52x = 153,506,145.77
  5. Step 5: Solve for x
    x = 153,506,145.77/13,281.52
  6. Step 6: Final answer
    x = 11,557.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.